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Snorting silver salts
Hi Tom,
It says so in Thieles Fabrikationsbuch Photooptik II Carl Zeiss Jena.
First lenses to have a number 276xxxx was a batch of 500 Biotar 2.0/58mm lenses for the 24x36mm Exakta, it was completed June 11th, 1941. Part of that batch was in M40 Praktiflex mount.
The 279xxxx batches of lenses all were completed by the end of the war, in various mounts and a whole slew of different lens designs, Biogons, Tessars, Triplet, Triotar. But, we have seen that the Leica mount Sonnars with 279xxxx numbers were manufactured towards the end of 1945, probably because that is when unfinished product was brought to completion. Many of those lenses were delivered to the US Army and their personnel and brought home to the States, right?
The 281xxxx series of lenses did not start until July 12th 1945, when a batch of 1,000 3.5/37mm Tessar lenses for the Robot was completed. So 284xxxx and later definitely were post-war, although they likely have been compiled from pre-war and wartime stock, at least in part.
I don't think that the 284xxxx and later series could have been manufactured during wartime already and that this was not recorded in the production ledger: a 200 pieces batch of Leica mount Sonnar 2.0/50mm lenses with the 280xxxx serial range was produced in 1947 and the ledger neatly records that so it is unlikely that other odd series or dates miraculously were left out of that same ledger.
Therefor, 276xxxx is wartime, 279xxxx is a few months postwar and 284xxxx is definitely postwar, Soviet production.
It says so in Thieles Fabrikationsbuch Photooptik II Carl Zeiss Jena.
First lenses to have a number 276xxxx was a batch of 500 Biotar 2.0/58mm lenses for the 24x36mm Exakta, it was completed June 11th, 1941. Part of that batch was in M40 Praktiflex mount.
The 279xxxx batches of lenses all were completed by the end of the war, in various mounts and a whole slew of different lens designs, Biogons, Tessars, Triplet, Triotar. But, we have seen that the Leica mount Sonnars with 279xxxx numbers were manufactured towards the end of 1945, probably because that is when unfinished product was brought to completion. Many of those lenses were delivered to the US Army and their personnel and brought home to the States, right?
The 281xxxx series of lenses did not start until July 12th 1945, when a batch of 1,000 3.5/37mm Tessar lenses for the Robot was completed. So 284xxxx and later definitely were post-war, although they likely have been compiled from pre-war and wartime stock, at least in part.
I don't think that the 284xxxx and later series could have been manufactured during wartime already and that this was not recorded in the production ledger: a 200 pieces batch of Leica mount Sonnar 2.0/50mm lenses with the 280xxxx serial range was produced in 1947 and the ledger neatly records that so it is unlikely that other odd series or dates miraculously were left out of that same ledger.
Therefor, 276xxxx is wartime, 279xxxx is a few months postwar and 284xxxx is definitely postwar, Soviet production.
